A glucometer is a machine used to test your sugar levels. To test your glucose, the doctor will have to prick your finger and take a drop of your blood into a slide. The slide will then be inserted into the glucometer and the glucometer will give its reading. A normal sugar level is 92.10. Conditions that are related to sugar levels are hypoglycemia and hyperglycemia. Hypoglycemia is the condition of having low sugar levels. If you have hypoglycemia, you will experience headaches, dizziness, and you might pass out. Hyperglycemia, often referred to as diabetes, is the condition of having high sugar levels. Hyperglycemia can damage the brain, cause headaches, confusion, and in extreme cases, cause someone to go into coma. Also, a person can experience polyurea, passing too much urine, or polusypsia, getting very thirsty throughout the day, during diabetes. As you can see, it is very important to check your glucose regularly, and on the bright side, it only takes about two minutes!